Answer:
Answered
Explanation:
A) The work done by gravity is zero because displacement and the gravitational force are perpendicular to each other.
W= FS cosθ
θ= 90 ⇒cos90 = 0 ⇒W= 0
B) work done by tension
W= Tcosθ×S= 5cos30×2.30= 10J
C) Work done by friction force
W= f×s=1×2.30= 2.30 J
D) Work done by normal force is Zero because the displacement and the normal force are perpendicular to each other.
E) The net work done= Work done by tension in the rope - frictional work
=10-2.30= 7.7 J
High mass are largest , hotest , and brightest sequence
Answer: 64 miles
Explanation: it is 8 miles per second so you would multiply 8 x 8 because it is 8 seconds
Using
KE = ½mv² = ½×1500×19×19 = 270750 joules
<span>Days and nights are equal in length everywhere.(gradpoint)</span>
